Finding the Fourth Proportional to 5,222.72, 7,830.56 and 2,754.92

Step by Step Solution

1. Step 1: Write the proportion equation
   5,222.72 : 7,830.56 = 2,754.92 : x
2. Step 2: Convert to fraction form
   5,222.72/7,830.56 = 2,754.92/x
3. Step 3: Cross multiply
   5,222.72x = 7,830.56 × 2,754.92
4. Step 4: Simplify right side
   5,222.72x = 21,572,566.36
5. Step 5: Solve for x
   x = 21,572,566.36/5,222.72
6. Step 6: Final answer
   x = 4,130.52